Overcoming the losses of a split ring resonator array with gain

TitleOvercoming the losses of a split ring resonator array with gain
Publication TypeJournal Article
Year of Publication2011
AuthorsFang AA, Huang ZX, Koschny T, Soukoulis CM
Journal TitleOptics Express
Date Published06
ISBN Number1094-4087
Accession NumberWOS:000292867600087

We present a computational approach, allowing for a self-consistent treatment of a split ring resonator (SRR) array with a gain layer underneath. We apply three different pumping schemes on the gain layer: (1) homogeneously pumped isotropic gain, (2) homogeneously pumped isotropic gain with a shadow cast by the SRR and (3) anisotropic gain pumped in a selected direction only. We show numerically the magnetic losses of the SRR can be compensated by the gain. The difference on loss compensations among the three pumping schemes is analyzed by the electric field distribution. Studies also show the dielectric background of gain does not affect the loss compensation much for the gain only pumped in the direction parallel to the SRR plane. (C) 2011 Optical Society of America